A stent (10) adapted for placement in a body lumen (50) such as the urethra, ureters, common bile duct, vagina, cervix, fallopian tubes, sinus tract, rectum, bowel, esophagus or vascular system is configured as a coil (14) whose adjacent loops (12) can be pulled apart for removing the stent (10) from...http://www.google.es/patents/US5514176?utm_source=gb-gplus-sharePatente US5514176 - Pull apart coil stent
